Perhaps you should try some spelling variations:
communication methods » communication media, communication model
trade information » price information, private information, trade integration
clean development » human development, urban development
technology trade » technology trends, technology transfer, technology transfers
information act » information age, information a, information about
methods clean » methods can, methods cell
de mass » de masse, de mais, de masa
act de » act der, pact de, act does

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: technology trade information act de mass communication methods clean development _ afrique.*.